trayser



Y gotici! tntrs getint @frn PHlLlP P. TRAYSER, 0F BALTIMORE, MARYLAND,ASSIGNOR TO HlMSELF AND :lilCHARD W. TYSON. OF SAME PLAGE.

IMPBOVED BOLT-HEADING MACHINE.

It: .Srtgrbulr-nfrmb tu in thrsegittrrs lnimt nnb mating part n( thesamt.

TO ALL WHOM I'l MAY CONCERTI:

Be it known that I, lnxmv 1. Tnnsizn, of the city nml county ofBaltimore. in the State ofhlnrylnnd,

have invented a. nensnd useful Improvement in Machines for HeadingBolts; und I do hereby deelne tbc following to be n full, clear, andexact description of the nntnrc, construction, and operation ofthe same,reference being had to the accompanying drawings, which nre inode n partof this specification, und in which- Figure l is n. perspective vien' ofn holt-heading machine embodying my inventionr Figure 2 is nlongitudinal vertical section of the some, the plane of section beingIndicated by the line r .r. iig. 1. t 4 l Figure S is s transversesection of thtl salue on tho line y y, iig. 1.

' Figure 4 is s perspective view of one of the jaws which form the die.

Similar letters of reference indicate corresponding parts in the several'gures..

lThis invention relates to the mnchincs in nrhieh'the holt-Bend isproduced by forcing n male die or heading A tool into n suitable matrix:ind against the end of the bolt-blink. which if. clamped hctween thetwo jnwa in which the matrix is formed. y l' Myvimp'rovement consists inn novel method of applying the bending tool, whereby the square bend ofthe same is adapted to readily adjust itself within the squnrc matrixofthe dien-hiep insures s more perfect torniation of the bolt-head andprevents the damage which results from the heading tonlxorhing nnevenlyor ont of true within thc matrix. v i

The following description will enable others skilled in the nrt to whichmy invention lppertoins to fully understand und use the some.' f

In the nceompnnying drawings,A represents the frnmewhicll supports theseverll opersting devices. -B il the driving-shaft, to which poner muybe applied to give it r rotary motion for the perpose of advancing thehollow tool-carrier C toward the jaws D D', which form 'line die inwhich tne bult-headis strook up. The tool-carrie. v works throughguides, J J'. I: is n com or tnppct on the shaft D, acting against theextremity of the toocrsrrier C to give the latter its eti'cctivcimpulse, the return motion ofthe tool-carrier being efected by thespring E.

is the tool. the hesd f of which operstes within the cnlnrged cavity ormatrix in the dies wherein the boltgheld is formed. The movable jaw Dot' tlie dies is connected by a. hinge, G, with s lever, H, whichisvibrnted by n' cam, 6'-, on the'shaft B, nnd .s cr;cs.tol,'nlternstelyadvance thc jow D' against ond retrct it from the jow D, u the bolts nresuccessively introduced and removed from the die. No further descriptionof the deveosfor operating the movable jaw of the die is needed, as theyform no port ot' the present invention. The contiguous faces of the juwsD D nre formed with recesses or cavities, d d', (see lig. 4,) which`when brought together, col:-

stitute s mould or die, corresponding in shape to the bolt or spikewhich il to h produced. Wlisntlxe blnnh ll introduced it is clsmped rmlywithin the smaller part il ot' the die, und th end which is toform thoholt-head projects into the enlarged sqnsrc pnrt of the matrix d d'. Theheading tool F mplscedloosely within the holle' tool-carrier C, butretained therein by means of the hooi: or ber-.t nvm I', thoextrenrityot which occupies s circular groove j in the shank of the tool F. Bythus securing the tool F lithin. the toobe'srrier O, the formeris heldagainst verticnl or longitudinal displacement, and at thc same timepermitted to liu! llightflteral and l turning movement within thetool-csrrier. Hence, when the hcsdf is sdvsnced-in the die snd agsinstthe bolthesd, it is free to adjust itself lo ss to move freely andsmoothly without friction or binding. In this wey the die is preservedagainst abrasion from the heading tool, und the latter nets with nachbetter elfct in striking op the 'bolt head. In opertion, the head of thetool F is never withdronlu entirely from the hesdingmsttix of the die DD'. The die is represented ss formed in two perte, which permit eitherthe clamping or healing part to be ndjnsted independently to compensatefor wear.

Hering thus described my invention, thefollowng is what I clsirnss new,and desirs to secure by Letters. Patent: 'n

Y I claim the heading tool F, working within thsfdls -D D', and sosecured within the toolfenr'rcr nl to be capable ot' adjusting itselfwithin the die, anbstnntislly nl and for-the purpose herein set forth.V

` n PHILIP r. Transen.`

Witnesses! l A Wx. Gxnuol, f v Wn'rrn D. Hiss.

